package com.example.cameracodec;

import android.text.TextUtils;

import java.io.File;

public class MyFileUtils {
    /**
     * 生成文件夹
     *
     * @param path     /sdcard/AARecorded
     * @return
     */
    public static String getCreateFileDir(String path) {
        File file = new File(path);
        if (!file.exists()) {
            file.mkdirs();
        }
        return path;
    }

    /**
     * 删除指定目录下的所有文件以及这个文件夹
     *
     * @param path
     * @return
     */
    public static boolean deleteThisDirAndFile(String path) {
        if (TextUtils.isEmpty(path)) {
            return false;
        }
        File file = new File(path);
        if (file.isDirectory()) {
            String[] children = file.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(file, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        // 目录此时为空，可以删除
        return file.delete();
    }

    /**
     * 递归删除目录下的所有文件及子目录下所有文件
     *
     * @param dir 将要删除的文件目录
     * @return boolean Returns "true" if all deletions were successful.
     * If a deletion fails, the method stops attempting to
     * delete and returns "false".
     */
    public static boolean deleteDir(File dir) {
        if (dir.isDirectory()) {
            String[] children = dir.list();
            for (int i = 0; i < children.length; i++) {
                boolean success = deleteDir(new File(dir, children[i]));
                if (!success) {
                    return false;
                }
            }
        }
        // 目录此时为空，可以删除
        return dir.delete();
    }
}
